The Department of Transportation shall maintain, and keep in repair, all highways or portions of highways, including the bridges and culverts, on the state trunk highway system. Source: SL 1923, ch 285 ; SDC 1939, § 28.0211; SL 1965, ch 132 ; SL 1984, ch 207 , § 24; SL 2010, ch 145 , § 25.